Process for the dyeing of synthetic fiber materials from organic solvents

US3930794A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Walter Birke · Frankfurt am Main, DE
• Rudolf Schickfluss
• Franz Schon · Frankfurt am Main, DE
• Willi Steckelberg · Hofheim, DE

Key dates

• Filing date: Oct 19, 1973
• Grant date: Jan 6, 1976
• Expiry date: Oct 19, 1993

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S8/928
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

A process for the continuous dyeing of textile materials containing or consisting of synthetic fibrous materials from organic solvents, which comprises impregnating the said textile materials with an organic dyebath containing at least one dyestuff of the formula ##SPC1## In which the phenyl radical A is unsubstituted or substituted by 1 to 3 substituents of the group consisting of halogen, nitro, cyano, trifluoromethyl, lower alkyl, lower alkoxy and lower alkoxy-lower alkylene--O--, B represents naphthylene or ##SPC2## R.sub.2, r.sub.3, r.sub.4 and R.sub.5 each represent hydrogen, halogen, lower alkyl, lower alkoxy or lower alkoxy-lower alkylene--O--, and R.sub.1 stands for a linear or branched alkylcarbonyl of at most 18 carbon atoms, ##SPC3## ##SPC4## ##SPC5## ##SPC6## And an organic solvent, and fixing the dyestuffs by submitting the impregnated materials to a heat treatment.